private void load_data_to_m_pv()
{
decimal v_id_nhan_vien;
if (m_sle_chon_nhan_vien.EditValue == null)
v_id_nhan_vien = -1;
else
v_id_nhan_vien = CIPConvert.ToDecimal(m_sle_chon_nhan_vien.EditValue.ToString());
US_GD_CHAM_CONG v_us = new US_GD_CHAM_CONG();
DataSet v_ds = new DataSet();
v_ds.Tables.Add(new DataTable());
v_us.FillDatasetChamCongTongHop(v_ds, m_str_thang, m_str_nam, v_id_nhan_vien);
m_pv.DataSource = v_ds.Tables[0];
}